我有一个RecyclerView通过适配器实现CardViews的LinearLayout。在每个CardView中，我都有一个微调器。我需要做的是在选择微调器时获得CardViews位置。例如，如果我在屏幕上的列表中有10个CardViews，每个都有一个微调器，并且在第5项中从微调器中选择一个值，那么我需要获得该第5个位置以及所选值。
我可以得到选定的值。问题在于获取CardViews位置。 CardViews是从ArrayList生成的。
我将在下面包含我的代码以及所需结果的图像。任何帮助是极大的赞赏！！
RecyclerView适配器
public class PopularAdapter extends RecyclerView.Adapter<PopularAdapter.MyViewHolder> {
PopularFragment mPopularFragment;
private Context mContext;
private ArrayList<GameData> gameDataArr = new ArrayList<GameData>();
private String userId;
public PopularAdapter(Context context, ArrayList<GameData> gameDataArr, PopularFragment mPopularFragment, String userId) {
mContext = context;
this.gameDataArr = gameDataArr;
this.mPopularFragment = mPopularFragment;
this.userId = userId;
}
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView title;
public ImageView thumbnail;
private CardView mCardView;
PopularFragment mPopularFragment;
Spinner mGameSpinner;
LinearLayout mSpinnerLayout;
public MyViewHolder(View view, final PopularFragment mPopularFragment, final String userId) {
super(view);
this.mPopularFragment = mPopularFragment;
mSpinnerLayout = (LinearLayout) view.findViewById(R.id.spinner_layout);
title = (TextView) view.findViewById(R.id.item_title);
thumbnail = (ImageView) view.findViewById(R.id.item_main_img);
mCardView = (CardView) view.findViewById(R.id.item_cardview);
mCardView.setOnClickListener(this);
mGameSpinner = (Spinner) view.findViewById(R.id.game_spinner_options);
mGameSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long l) {
//String ASIN = gameDataArr.get(position).getAmazonId();
System.out.println(parent.getId()); // <--- prints the same value for each item.
if(userId == null){
Toast.makeText(mPopularFragment.getActivity(), "You must be logged in.", Toast.LENGTH_LONG).show();
return;
}
FirebaseDbHelper mFirebaseDbHelper = new FirebaseDbHelper();
if(position == 0){
// remove from db
// mFirebaseDbHelper.removeOwnedGame(ASIN, userId);
} else if(position == 1){
// add to owned games
// mFirebaseDbHelper.addOwnedGame(ASIN, userId);
} else {
// add to wishlist games
// mFirebaseDbHelper.addWishlistGame(ASIN, userId);
}
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
}
@Override
public void onClick(View view) {
System.out.println("click: " + getPosition());
//mPopularFragment.openGameActivity(getPosition());
}
}
@Override
public PopularAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
System.out.println("parent: " + parent);
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item, parent, false);
return new PopularAdapter.MyViewHolder(itemView, mPopularFragment, userId);
}
@Override
public void onBindViewHolder(final PopularAdapter.MyViewHolder holder, final int position) {
GameData game = gameDataArr.get(position);
holder.title.setText(game.getTitle());
Picasso.with(mContext).load(game.getFeatImgUrl()).resize(160, 200).into(holder.thumbnail);
}
@Override
public int getItemCount() {
return gameDataArr.size();
}
}
卡视图
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/item_cardview"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_marginBottom="0dp"
card_view:cardCornerRadius="4dp"
>
<LinearLayout
android:padding="16dp"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/item_main_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_toLeftOf="@+id/right_content"
android:scaleType="fitXY"
android:adjustViewBounds="false"/>
<LinearLayout
android:id="@+id/right_content"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/item_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="16dp" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Spinner
android:id="@+id/game_spinner_options"
android:entries="@array/game_dropdown"
android:layout_width="wrap_content"
android:layout_height="wrap_content"></Spinner>
<Button
android:text="Buy Now"
android:id="@+id/game_buy_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
流行片段
public class PopularFragment extends Fragment {
@BindView(R.id.popular_recyclerView)
RecyclerView mPopularRecyclerView;
private RecyclerView.Adapter mAdapter;
private ArrayList<GameData> gamesArray = new ArrayList<GameData>();
ApiResultsObject apiResults;
private FirebaseAuth auth;
private FirebaseUser user;
private FirebaseAuth.AuthStateListener authListener;
private String userId;
public PopularFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_popular, container, false);
ButterKnife.bind(this, view);
// bus instance
MyBus.getInstance().register(this);
// get api url
// trigger async task
// use results
String amazonApiUrl = getAmazonApiUrl();
if(amazonApiUrl != null){
new AmazonAsyncTask().execute(amazonApiUrl);
}
//get firebase auth instance
auth = FirebaseAuth.getInstance();
//get current user
user = FirebaseAuth.getInstance().getCurrentUser();
//add a auth listener
authListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
System.out.println("User logged in. Game activity.");
userId = user.getUid();
} else {
// User is signed out
System.out.println("User not logged in. Game activity");
}
}
};
// Inflate the layout for this fragment
return view;
}
private String getAmazonApiUrl() {
String amazonApiUrl = "";
AmazonQuery amazonQuery = new AmazonQuery("ItemSearch");
amazonApiUrl = amazonQuery.buildUrl();
return amazonApiUrl;
}
private void setData(ApiResultsObject data) {
gamesArray = data.getGamesArray();
if (data != null) {
mAdapter = new PopularAdapter(getActivity().getBaseContext(), gamesArray, this, userId);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
mPopularRecyclerView.setLayoutManager(mLayoutManager);
mPopularRecyclerView.setAdapter(mAdapter);
}
}
@Subscribe
public void onAsyncTaskResults(BrowseAsyncTaskResult event) {
apiResults = event.getResults();
if (apiResults != null) {
setData(apiResults);
}
}
@Override
public void onDestroy() {
MyBus.getInstance().unregister(this);
super.onDestroy();
}
@Override
public void onStart() {
super.onStart();
auth.addAuthStateListener(authListener);
}
@Override
public void onStop() {
super.onStop();
if (authListener != null) {
auth.removeAuthStateListener(authListener);
}
}
}
最佳答案
您可以在onBindViewHolder（）中的mGameSpinner上设置OnClickListener。
onBindViewHolder(final PopularAdapter.MyViewHolder holder, final int position)
然后，您可以存储/使用position参数，因为它将成为该特定微调器的gameArray的索引。然后，您可以使用该索引来获取微调框的当前选定值，并使用该索引进行任何操作。